JPS6340654Y2 - - Google Patents
Info
- Publication number
- JPS6340654Y2 JPS6340654Y2 JP1983088276U JP8827683U JPS6340654Y2 JP S6340654 Y2 JPS6340654 Y2 JP S6340654Y2 JP 1983088276 U JP1983088276 U JP 1983088276U JP 8827683 U JP8827683 U JP 8827683U JP S6340654 Y2 JPS6340654 Y2 JP S6340654Y2
- Authority
- JP
- Japan
- Prior art keywords
- circular
- tuning
- rotating shaft
- pair
- rotating body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 21
- 239000003990 capacitor Substances 0.000 description 18
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Mechanical Control Devices (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、例えばラジオ受信機におけるダイヤ
ル駆動装置に適用するのに最適なスリツプ機構に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a slip mechanism that is most suitable for application to a dial drive device in a radio receiver, for example.
従来から例えばチユーニングつまみを回転操作
してバリコン等の同調素子を回転駆動するように
したラジオ受信機におけるダイヤル駆動装置にお
いては、バリコンの正逆の回転限界位置にてチユ
ーニングつまみをスリツプさせる為のスリツプ機
構が用いられている。そしてチユーニングつまみ
とそれが取付けられるチユーニング軸との間に設
けられるスリツプ機構の一般的構造は、チユーニ
ングつまみに一体成形された円筒状ボスにスリツ
トを設け、このボスをチユーニング軸の外周に挿
入して相対的に回転自在に構成し、このボスの外
周に比較的巾広のリング状板ばねを嵌装して、こ
の板ばねによる外周からの締付け力によつてボス
の内周面をチユーニング軸の外周面に弾性的に押
圧させて、これら内周面と外周面との間でのすべ
り作用にてチユーニングつまみとチユーニング軸
との間のスリツプトルクが得られるように構成し
たものである。
Conventionally, for example, a dial drive device in a radio receiver that rotates a tuning knob to rotate a tuning element such as a variable capacitor has a slip for slipping the tuning knob at the forward and reverse rotation limit position of the variable capacitor. mechanism is used. The general structure of the slip mechanism provided between the tuning knob and the tuning shaft to which it is attached is to provide a slit in a cylindrical boss integrally formed on the tuning knob, and insert this boss into the outer periphery of the tuning shaft. A relatively wide ring-shaped leaf spring is fitted around the outer periphery of the boss, and the tightening force from the outer periphery of the leaf spring causes the inner periphery of the boss to rotate around the tuning shaft. It is configured so that slip torque between the tuning knob and the tuning shaft can be obtained by the sliding action between the inner and outer circumferential surfaces by elastically pressing the outer circumferential surface.
しかしながらこのような従来のスリツプ機構で
は、チユーニング軸の直径が小さい為に大きなス
リツプトルクを得難かつた。従つてスリツプトル
クにバラツキが発生し易くて、バリコンの正逆の
回転限界位置以外の位置にてチユーニングつまみ
が不測にスリツプし易い欠陥があつた。またチユ
ーニングつまみのボスをチユーニング軸の外周に
或る程度深く挿入（軸線方向の挿入長さが長いこ
と）しなければならない為に、軸線方向に大きな
スペースを必要とし、機器の薄形化を阻害する欠
陥があつた。
However, in such a conventional slip mechanism, it is difficult to obtain a large slip torque because the diameter of the tuning shaft is small. Therefore, variations in slip torque tend to occur, and the tuning knob tends to slip unexpectedly at a position other than the forward/reverse rotation limit position of the variable capacitor. In addition, since the boss of the tuning knob must be inserted a certain depth into the outer periphery of the tuning shaft (long insertion length in the axial direction), a large space is required in the axial direction, which hinders thinning of the device. There was a defect.
本考案は、回転体と回転軸との間に大きなスリ
ツプトルクを得ることが出来、しかも、回転体の
正逆の回転時におけるスリツプトルクを同じに出
来るスリツプ機構を得ることを目的とする。 The object of the present invention is to obtain a slip mechanism that can obtain a large slip torque between a rotating body and a rotating shaft, and can also make the slip torque the same when the rotating body rotates in the forward and reverse directions.
本考案のスリツプ機構は、回転体と、その回転
体が相対的に回転自在に取付けられる回転軸と、
ほぼＵ字状の中央部とその中央部の両端部から互
いに逆方向に向けて面対称状をなして円弧状に弯
曲された一対の外周部とが互いに一体に形成さ
れ、かつ中央部が外周部に対して軸方向に偏倚さ
れた線状体からなるばね部材とを具備し、上記回
転軸の直径より大きな円形内周面を有する円形凹
部を上記回転体に設け、上記ばね部材の一対の外
周部を中央部に対する両横外方への偏倚力に抗し
て上記円形凹部内に挿入させた状態で、そのばね
部材の中央部を外周部に対する軸方向の偏倚力に
抗してネジにより上記回転軸に固定することによ
り、上記ばね部材の一対の外周部を上記円形凹部
の円形内周面及び底面の円形内周面に近接された
位置に弾性的に押圧させ、その一対の外周部と円
形内周面及び底面の円形内周面に近接された位置
との間でのすべり作用部にて上記回転体と上記回
転軸との間のスリツプトルクが得られるように構
成したものである。
The slip mechanism of the present invention includes a rotating body, a rotating shaft on which the rotating body is relatively rotatably attached,
A substantially U-shaped central portion and a pair of outer circumferential portions curved in an arc shape in plane symmetry in opposite directions from both ends of the central portion are formed integrally with each other, and the central portion is formed on the outer periphery. a spring member made of a linear body biased in the axial direction with respect to the rotating body, a circular recessed part having a circular inner circumferential surface larger than the diameter of the rotating shaft is provided in the rotating body; With the outer peripheral part inserted into the circular recess against the outward biasing force on both sides of the central part, the central part of the spring member is screwed against the axial biasing force against the outer peripheral part. By being fixed to the rotating shaft, the pair of outer peripheral parts of the spring member are elastically pressed to a position close to the circular inner peripheral surface of the circular recess and the circular inner peripheral surface of the bottom surface, and the pair of outer peripheral parts of the spring member are The slip torque between the rotating body and the rotating shaft is obtained at the slip acting portion between the circular inner circumferential surface and a position close to the circular inner circumferential surface of the bottom surface. .
上記のように構成されたスリツプ機構によれ
ば、ばね部材の一対の外周部を円形凹部の円形内
周面と底面の円形内周面に近接された位置との２
面に強く圧着させることが出来るので、回転体と
回転軸との間に大きなスリツプトルクを得ること
が出来る。しかも、ばね部材の円弧状に弯曲され
た一対の外周部がほぼＵ字状の中央部に対して面
対称状に形成されているので、回転体の正逆の回
転時におけるスリツプトルクが全く同じになる。
According to the slip mechanism configured as described above, the outer circumferential portions of the pair of spring members are placed between the circular inner circumferential surface of the circular recess and the circular inner circumferential surface of the bottom surface.
Since it can be strongly pressed against the surface, a large slip torque can be obtained between the rotating body and the rotating shaft. Moreover, since the pair of arcuate outer circumferential parts of the spring member are formed in plane symmetry with respect to the almost U-shaped center part, the slip torque is exactly the same when the rotating body rotates in the forward and reverse directions. become.
以下、本考案をラジオ受信機のダイヤル駆動装
置に適用した実施例を図面に基づき説明する。
Hereinafter, an embodiment in which the present invention is applied to a dial drive device of a radio receiver will be described based on the drawings.
先ず第１図〜第３図において、回転体であるチ
ユーニングつまみ１は合成樹脂成形された円板体
であり、回転軸である金属のチユーニング軸２の
先端部外周に相対的に回転自在に取付けられる。
チユーニングつまみ１はキヤビネツト３を構成す
る合成樹脂成形された一対のハーフ４，５のう
ち、一方のハーフ４の外面に形成された凹所６内
に配置され、そのチユーニングつまみ１の外周面
１ａは第２図及び第３図に示す如く凹所６からハ
ーフ４の横側方に突出されている。この凹所６の
ほぼ中央部でハーフ４には貫通孔７が設けられて
おり、チユーニング軸２はその貫通孔７にハーフ
４の内側から挿通されてチユーニングつまみ１と
同一軸線状態で回転自在に配置されている。なお
チユーニング軸２のハーフ４の内側端部にはチユ
ーニングギヤ８が一体に設けられている。 First, in FIGS. 1 to 3, the tuning knob 1, which is a rotary body, is a disk body made of synthetic resin, and is rotatably attached to the outer periphery of the tip of the metal tuning shaft 2, which is the rotating shaft. It will be done.
The tuning knob 1 is disposed in a recess 6 formed on the outer surface of one half 4 of a pair of synthetic resin-molded halves 4 and 5 constituting the cabinet 3, and the outer peripheral surface 1a of the tuning knob 1 is As shown in FIGS. 2 and 3, it projects laterally from the recess 6 of the half 4. A through hole 7 is provided in the half 4 at approximately the center of the recess 6, and the tuning shaft 2 is inserted into the through hole 7 from the inside of the half 4 and is rotatable on the same axis as the tuning knob 1. It is located. Note that a tuning gear 8 is integrally provided at the inner end of the half 4 of the tuning shaft 2.
ところで第２図及び第３図に示す如く、貫通孔
７の外周で凹所６の底面６ａにはチユーニング軸
２の直径D1より内径D2が大きい円形リブ１０が
同一軸線状態でハーフ４に一体的に成形されて設
けられている。そしてチユーニングつまみ１はそ
の中心に設けられた上記内径D2より更に大きな
内径D3の円形孔１１によつて円形リブ１０の外
周に回転自在に嵌合されている。またチユーニン
グつまみ１には円形凹部１３が設けられ、この円
形凹部１３には上記内径D3より更に大きな内径
D4の円形内周面１２が同一軸線状態に設けられ
ている。なおその円形凹部１３の開放端の外周に
は浅い円形段部１４が設けられていて、アルミ板
等の薄い円板である飾り板１５がその円形段部１
４内に嵌合されて接着等にて固定され、この飾り
板１５によつて円形凹部１３内が目隠しされてい
る。 By the way, as shown in FIGS. 2 and 3, on the outer periphery of the through hole 7 and the bottom surface 6a of the recess 6, a circular rib 10 having an inner diameter D2 larger than the diameter D1 of the tuning shaft 2 is attached to the half 4 on the same axis. It is integrally molded and provided. The tuning knob 1 is rotatably fitted around the outer periphery of the circular rib 10 through a circular hole 11 provided at its center and having an inner diameter D3 larger than the inner diameter D2. Further, the tuning knob 1 is provided with a circular recess 13, and this circular recess 13 has an inner diameter larger than the above-mentioned inner diameter D3 .
The circular inner circumferential surfaces 12 of D4 are provided on the same axis. A shallow circular step 14 is provided on the outer periphery of the open end of the circular recess 13, and a decorative plate 15, which is a thin disk such as an aluminum plate, is attached to the circular step 1.
4 and fixed by adhesive or the like, and the interior of the circular recess 13 is hidden by this decorative plate 15.
次にチユーニングつまみ１とチユーニング軸２
との間にスリツプ機構を構成する為にばね部材１
７が取付けられている。このばね部材１７は、第
１図及び第２図に示す如く線状体である例えばス
テンレス線やピアノ線等の金属線を弯曲して形成
したものであり、ほぼＵ字状をなす中央部１７ａ
と、その中央部１７ａのＵ字状の両端部から互い
に逆方向に向けて面対称状をなして円弧状に弯曲
された一対の外周部１７ｂとが互いに一体に形成
されたほぼω形状を呈している。そして第２図及
び第３図に示す如く、そのばね部材１７はチユー
ニングつまみ１の円形凹部１３内に挿入されてい
る。そしてチユーニング軸２の先端に設けられた
ほぼ小判形をなすばね嵌合部１８（第１図参照）
の外周にそのばね部材１７の中央部１７ａが嵌合
され、チユーニング軸２の先端に設けられたネジ
孔１９（第１図参照）に螺合されたフランジ付き
ネジ２０によつてそのばね部材１７の中央部１７
ａがチユーニング軸２の先端に固定されている。
そしてそのばね部材１７の円弧状をなす一対の外
周部１７ｂが矢印ａ方向で示す中央部１７ａに対
する横外方への偏倚力によつて円形凹部１３の円
形内周面１２に弾性的に強く圧着されている。 Next, tune the tuning knob 1 and the tuning shaft 2.
Spring member 1 is used to configure a slip mechanism between
7 is installed. As shown in FIGS. 1 and 2, this spring member 17 is formed by bending a linear body, for example, a metal wire such as a stainless steel wire or a piano wire, and has a central portion 17a that is approximately U-shaped.
and a pair of outer circumferential parts 17b which are curved in an arc shape in plane symmetry from both ends of the U-shape of the central part 17a in opposite directions to each other. ing. As shown in FIGS. 2 and 3, the spring member 17 is inserted into the circular recess 13 of the tuning knob 1. As shown in FIGS. And a spring fitting part 18 (see Fig. 1), which has a substantially oval shape, is provided at the tip of the tuning shaft 2.
The center portion 17a of the spring member 17 is fitted onto the outer periphery of the spring member 17, and the spring member 17 is tightened by a flanged screw 20 screwed into a screw hole 19 (see FIG. 1) provided at the tip of the tuning shaft 2. central part 17 of
a is fixed to the tip of the tuning shaft 2.
The pair of arcuate outer circumferential parts 17b of the spring member 17 are elastically and strongly pressed against the circular inner circumferential surface 12 of the circular recess 13 by a laterally outward biasing force with respect to the central part 17a shown in the direction of arrow a. has been done.
なおこの際、第５Ａ図に示す如くフランジ付ネ
ジ２０にてばね部材１７の中央部１７ａがチユー
ニング軸２の先端に固定される以前の状態では、
その中央部１７ａは一対の外周部１７ｂに対して
所定の角度θ1だけ軸方向（第５図で上方）に傾斜
された状態に偏倚されている。次に第５Ｂ図に示
す如くフランジ付ネジ２０にてばね部材１７の中
央部１７ａがチユーニング軸２の先端に固定され
ると、その中央部１７ａが一対の外周部１７ｂに
対する第５Ａ図で上方への偏倚力に抗して矢印ｂ
方向に押圧されて上記角度θ1が小さな角度θ2に圧
縮される。この結果一対の外周部１７ｂがその矢
印ｂ方向の圧縮反発力によつてチユーニングつま
み１の円形凹部１３の底面１３ａの円形内周面１
２に近接された位置にも矢印ｂ方向から強く圧着
される。 At this time, as shown in FIG. 5A, before the center portion 17a of the spring member 17 is fixed to the tip of the tuning shaft 2 with the flange screw 20,
The central portion 17a is inclined in the axial direction (upward in FIG. 5) by a predetermined angle θ 1 with respect to the pair of outer peripheral portions 17b. Next, as shown in FIG. 5B, when the center portion 17a of the spring member 17 is fixed to the tip of the tuning shaft 2 with the flange screw 20, the center portion 17a is moved upwardly in FIG. 5A with respect to the pair of outer peripheral portions 17b. arrow b against the biasing force of
The angle θ 1 is compressed to a small angle θ 2 by being pressed in the direction. As a result, the pair of outer peripheral portions 17b are compressed by the compressive repulsive force in the direction of the arrow b, so that the circular inner peripheral surface 1 of the bottom surface 13a of the circular recess 13 of the tuning knob 1
The position close to 2 is also strongly pressed from the direction of arrow b.
従つて、ばね部材１７の一対の外周部１７ｂと
円形内周面１２及び底面１３ａの円形内周面１２
に近接された位置の２面との間でのすべり作用部
にてチユーニングつまみ１とチユーニング軸２と
の間のスリツプトルクが得られるように構成され
ている。 Therefore, the pair of outer peripheral portions 17b and circular inner peripheral surface 12 of the spring member 17 and the circular inner peripheral surface 12 of the bottom surface 13a.
The structure is such that a slip torque between the tuning knob 1 and the tuning shaft 2 can be obtained at the sliding action portion between the two surfaces located close to each other.
なおばね部材１７はチユーニングつまみ１の取
付け用ばねを兼用している。即ち一対の外周部１
７ｂの第５Ｂ図で矢印ｂ方向の押圧力によつてチ
ユーニングつまみ１が凹部６の底面６ａに押圧さ
れた状態に取付けられている。そして、ばね部材
１７の中央部１７ａの上記偏倚力によつて、フラ
ンジ付ネジ２０が第５Ｂ図で矢印ｃ方向への押圧
力を受け、この押圧力がチユーニング軸２に対す
るフランジ付ネジ２０のゆるみ防止の働きをす
る。また、チユーニング軸２は矢印ｃ方向への引
張力を受けて第３図に示したチユーニングギヤ８
がハーフ４の内面に押圧されるが、そのチユーニ
ングギヤ８とハーフ４の内面との間にはワツシヤ
ー２１が介在されていて、ハーフ４の内面に対す
るチユーニングギヤ８の回転摩擦は軽減されてい
る。またこのラジオ受信機は防水型に構成されて
いる為に、チユーニング軸２の先端側の外周と円
形リブ１０の内周との間にはＯリング２２が圧入
されている。 The spring member 17 also serves as a spring for attaching the tuning knob 1. That is, a pair of outer peripheral parts 1
7b, the tuning knob 1 is attached in a pressed state to the bottom surface 6a of the recess 6 by a pressing force in the direction of arrow b. Then, due to the biasing force of the central portion 17a of the spring member 17, the flanged screw 20 receives a pressing force in the direction of arrow c in FIG. 5B, and this pressing force loosens the flanged screw 20 with respect to the tuning shaft 2. Acts as a preventive measure. Further, the tuning shaft 2 receives a tensile force in the direction of arrow c, and the tuning gear 8 shown in FIG.
is pressed against the inner surface of the half 4, but a washer 21 is interposed between the tuning gear 8 and the inner surface of the half 4, and the rotational friction of the tuning gear 8 against the inner surface of the half 4 is reduced. Since this radio receiver is constructed to be waterproof, an O-ring 22 is press-fitted between the outer periphery of the distal end of the tuning shaft 2 and the inner periphery of the circular rib 10.
次に第１図、第３図及び第４図によつてダイヤ
ル駆動系を説明すれば、先ずキヤビネツト３内に
組込まれたプリント基板２４上に同調素子である
バリコン２５が取付けられている。そしてこのバ
リコン２５の回転軸２６に合成樹脂成形されたダ
イヤル表示ドラム２７がネジ２８によつて固定さ
れている。なおこのダイヤル表示ドラム２７は有
底の円筒体にて構成されていてその円筒部２７ａ
内にバリコン２５が挿入され、その底板部２７ｂ
によつて回転軸２６にネジ止めされている。そし
て円筒部２７ａの外周面にはダイヤル目盛２９が
表示され、このダイヤル目盛２９はキヤビネツト
３の側面で両ハーフ４，５間に設けられたダイヤ
ル表示窓３０の内側に対向されている。なおその
ダイヤル表示窓３０には透明板３１が接着等にて
固定されている。そしてこのダイヤル表示ドラム
２７の底板部２７ｂにはほぼ半円弧状をなす切欠
き３２がその外周に沿つて形成されており、その
切欠き３２の外周の内面には内歯ギヤ３３が形成
されている。そして前記チユーニングギヤ８が切
欠き３２内に挿入されて内歯ギヤ３３に係合され
ている。なお内歯ギヤ３３の外側でチユーニング
ギヤ８に対向する位置にはハーフ４の内面に一体
成形されたストツパーボス３４が設けられてい
て、内歯ギヤ３３はこのストツパーボス３４によ
つて挾まれてチユーニングギヤ８に対する離脱を
防止されている。 Next, the dial drive system will be explained with reference to FIGS. 1, 3, and 4. First, a variable capacitor 25, which is a tuning element, is mounted on a printed circuit board 24 built into the cabinet 3. A dial display drum 27 made of synthetic resin is fixed to the rotation shaft 26 of the variable capacitor 25 with a screw 28. Note that this dial display drum 27 is composed of a cylindrical body with a bottom, and the cylindrical portion 27a
The variable capacitor 25 is inserted inside, and its bottom plate part 27b
The rotary shaft 26 is screwed to the rotating shaft 26 by a screw. A dial scale 29 is displayed on the outer peripheral surface of the cylindrical portion 27a, and the dial scale 29 is opposed to the inside of a dial display window 30 provided between both halves 4 and 5 on the side surface of the cabinet 3. Note that a transparent plate 31 is fixed to the dial display window 30 by adhesive or the like. A notch 32 having a substantially semicircular arc shape is formed along the outer periphery of the bottom plate portion 27b of the dial display drum 27, and an internal gear 33 is formed on the inner surface of the outer periphery of the notch 32. There is. The tuning gear 8 is inserted into the notch 32 and engaged with the internal gear 33. A stopper boss 34 integrally formed on the inner surface of the half 4 is provided at a position facing the tuning gear 8 on the outside of the internal gear 33, and the internal gear 33 is held between the stopper boss 34 and the tuning gear 8 are prevented from leaving.
ダイヤル駆動装置は以上の如く構成されてい
て、チユーニングつまみ１の外周面１ａに指をか
けてこのチユーニングつまみ１を回転操作する
と、ばね部材１７の一対の外周部１７ｂと円形凹
部１３の円形内周面１２及び底面１３ａの円形内
周面１２に近接された位置の２面との間でのすべ
り作用部にて得られるスリツプトルクを介してば
ね部材１７及びチユーニング軸２が一体に回転さ
れる。そしてチユーニングギヤ８が内歯ギヤ３３
を駆動して、ダイヤル表示ドラム２７が減速され
て回転駆動されると共に、そのダイヤル表示ドラ
ム２７と一体にバリコン２５の回転軸２６が回転
駆動される。この結果、バリコン２５によつてラ
ジオ放送の周波数同調動作が行われると共に、そ
の同調された周波数がダイヤル目盛２９によつて
ダイヤル表示窓３０の指針位置に表示される。 The dial drive device is constructed as described above, and when the tuning knob 1 is rotated by placing a finger on the outer circumferential surface 1a of the tuning knob 1, the pair of outer circumferences 17b of the spring member 17 and the circular inner circumference of the circular recess 13 are rotated. The spring member 17 and the tuning shaft 2 are rotated together through the slip torque obtained at the sliding portion between the surface 12 and the bottom surface 13a, which are located close to the circular inner circumferential surface 12. The tuning gear 8 is an internal gear 33.
, the dial display drum 27 is decelerated and rotationally driven, and the rotating shaft 26 of the variable capacitor 25 is rotationally driven integrally with the dial display drum 27. As a result, the frequency tuning operation of the radio broadcast is performed by the variable capacitor 25, and the tuned frequency is displayed by the dial scale 29 at the pointer position of the dial display window 30.
そしてチユーニングつまみ１の回転操作中にバ
リコン２５の回転軸２６が正逆の回転限界位置に
達してバリコン２５内のストツパーに当接され、
その回転軸２６の回転が停止されると、これと同
時にダイヤル表示ドラム２７及びチユーニングギ
ヤ８を介してチユーニング軸２も停止される。す
るとそのチユーニング軸２と共にばね部材１７が
停止され、その瞬間にばね部材１７の両外周部１
７ｂと円形凹部１３の円形内周面１２との間のす
べり作用部にてスリツプトルクに抗したスリツプ
が生じる。この結果バリコン２５が正逆の回転限
界位置に達した瞬間からチユーニングつまみ１に
はスリツプトルクが付与されて、その回転は急に
重くなり、操作者はそのことを指にて即座に感知
することが出来る。 During the rotation operation of the tuning knob 1, the rotating shaft 26 of the variable capacitor 25 reaches the forward and reverse rotation limit position and comes into contact with a stopper inside the variable capacitor 25,
When the rotation of the rotating shaft 26 is stopped, at the same time, the tuning shaft 2 is also stopped via the dial display drum 27 and the tuning gear 8. Then, the spring member 17 is stopped together with the tuning shaft 2, and at that moment both outer peripheral portions 1 of the spring member 17 are stopped.
7b and the circular inner circumferential surface 12 of the circular recess 13, a slip occurs against the slip torque. As a result, from the moment the variable capacitor 25 reaches its forward/reverse rotation limit position, slip torque is applied to the tuning knob 1, and its rotation suddenly becomes heavier, which the operator can immediately sense with his fingers. I can do it.
ところで本考案のスリツプ機構は、ばね部材１
７の一対の外周部１７ｂと円形凹部１３の円形内
周面１２及び底面１３ａの円形内周面に近接され
た位置の２面との間でのすべり作用部にてスリツ
プトルクが得られるように構成したものであり、
しかもそのすべり作用部の直径は円形内周面１２
の内径D4に相当していて、この内径D4はチユー
ニング軸２の直径D1に比べて非常に大きい。従
つてそのチユーニング軸２の外周にすべり作用部
を設けていた従来のスリツプ機構に比べて非常に
大きなスリツプトルクを得ることが出来る。従つ
てスリツプトルクにバラツキが発生し難く、安定
したスリツプトルクを得ることが出来て、バリコ
ン２５の正逆の回転限界位置以外の位置にてチユ
ーニングつまみ１がダイヤル駆動系の負荷によつ
てチユーニング軸２に対して不測にスリツプして
しまうような不都合は全く発生しない。 The slip mechanism of the present invention is a spring member 1.
The present invention is configured such that a slip torque is obtained at a sliding action portion between a pair of outer circumferential portions 17b of the bearing 7 and two surfaces located close to the circular inner circumferential surface 12 of the circular recess 13 and the circular inner circumferential surface of the bottom surface 13a.
Moreover, the diameter of the sliding portion is a circular inner peripheral surface 12
The inner diameter D4 of the tuning shaft 2 corresponds to the inner diameter D4 , which is very large compared to the diameter D1 of the tuning shaft 2. Therefore, a very large slip torque can be obtained compared to the conventional slip mechanism in which a sliding portion is provided on the outer periphery of the tuning shaft 2. Therefore, the slip torque is less likely to vary, and a stable slip torque can be obtained, so that there is absolutely no problem in that the tuning knob 1 unexpectedly slips against the tuning shaft 2 due to the load of the dial drive system at a position other than the forward/reverse rotation limit position of the variable capacitor 25.
しかも本考案のスリツプ機構は、ばね部材１７
の円弧状に弯曲された一対の外周部１７ｂが中央
部１７ａに対して面対称状に形成されているの
で、チユーニングつまみ１の正逆の回転時におけ
るスリツプトルクが全く同じになる。 Moreover, the slip mechanism of the present invention has a spring member 17
Since the pair of outer peripheral portions 17b curved into an arc shape are formed in plane symmetry with respect to the central portion 17a, the slip torque when the tuning knob 1 is rotated in the forward and reverse directions is exactly the same.
従つて本考案のスリツプ機構によれば、チユー
ニングつまみ１の正逆の回転に対するバリコン２
５及びダイヤル表示ドラム２７の回転の追従性が
非常に良い上に、チユーニングつまみ１の正逆の
回転操作を違和感なく全く同じフイーリングで行
える。そして、チユーニングつまみ１によつてバ
リコン２５及びダイヤル表示ドラム２７を敏感に
しかも全く同じフイーリングで正逆に回転操作す
ることが出来て、前述した周波数同調動作を容易
かつ正確に行えるものである。 Therefore, according to the slip mechanism of the present invention, the variable capacitor 2 is
5 and the dial display drum 27 are very good in following the rotation, and the forward and reverse rotation operations of the tuning knob 1 can be performed with exactly the same feeling without any discomfort. The tuning knob 1 allows the variable capacitor 25 and the dial display drum 27 to be rotated in the forward and reverse directions sensitively and with exactly the same feeling, making it possible to perform the frequency tuning operation described above easily and accurately.
また以上の如く構成されたダイヤル駆動装置に
よれば、第３図に示す如く著しく薄形化された構
造になつている。 Further, the dial drive device constructed as described above has a structure that is extremely thin as shown in FIG.
即ち先ず、スリツプ機構を構成しているばね部
材１７の最大高さH1は非常に小さいものであり、
しかもこの高さH1はチユーニングつまみ１の高
さ（厚さ）H2内に完全に収容されている。従つ
てスリツプ機構を設ける為の特別なスペースは全
く不要である。次にチユーニングギヤ８の高さ
（厚さ）H3はダイヤル表示ドラム２７の高さ（厚
さ）H4内に完全に収容されており、またバリコ
ン２５の高さH5の大部分が上記高さH4内に収容
されている。なおバリコン２５の高さH5の全体
をダイヤル表示ドラム２７の高さH4内に収容す
ることも可能である。従つてこのダイヤル駆動装
置の全体の高さH6は非常に小さなものになつて
いる。またチユーニングギヤ８をダイヤル表示ド
ラム２７の切欠き３２内に挿入して内歯ギヤ３３
に係合させたこと及びバリコン２５をダイヤル表
示ドラム２７内に挿入したことによつて、このダ
イヤル駆動装置の全体の水平方向のスペースＳも
非常に小さなものになつている。 That is, first of all, the maximum height H1 of the spring member 17 constituting the slip mechanism is extremely small.
Moreover, this height H1 is completely accommodated within the height (thickness) H2 of the tuning knob 1. Therefore, no special space is required for providing the slip mechanism. Next, the height (thickness) H 3 of the tuning gear 8 is completely accommodated within the height (thickness) H 4 of the dial display drum 27, and most of the height H 5 of the variable capacitor 25 is within the height (thickness) H 4 of the dial display drum 27. It is housed within H4 . It is also possible to accommodate the entire height H5 of the variable capacitor 25 within the height H4 of the dial display drum 27. The overall height H 6 of this dial drive is therefore very small. In addition, the tuning gear 8 is inserted into the notch 32 of the dial display drum 27, and the internal gear 33 is inserted into the notch 32 of the dial display drum 27.
By engaging the variable capacitor 25 and inserting the variable capacitor 25 into the dial display drum 27, the overall horizontal space S of this dial drive device is also very small.
上記の実施例では、チユーニングつまみ１をハ
ーフ４に設けた円形リブ１０の外周に回転自在に
嵌合させたが、チユーニングつまみ１をチユーニ
ング軸２の外周に直接回転自在に支持させても良
い。 In the above embodiment, the tuning knob 1 is rotatably fitted on the outer periphery of the circular rib 10 provided on the half 4, but the tuning knob 1 may be rotatably supported directly on the outer periphery of the tuning shaft 2.
また上記の実施例では、本考案のスリツプ機構
をラジオ受信機のダイヤル駆動装置におけるチユ
ーニングつまみ１とチユーニング軸２との間に設
けたが、ダイヤル駆動系の他の如何なる場所に設
けても良い。また本考案のスリツプ機構は、ラジ
オ受信機のダイヤル駆動装置に限定されるもので
はなく、各種機器における各種回転力伝達機構に
適用可能である。 Further, in the above embodiment, the slip mechanism of the present invention is provided between the tuning knob 1 and the tuning shaft 2 in the dial drive device of a radio receiver, but it may be provided at any other location in the dial drive system. Further, the slip mechanism of the present invention is not limited to a dial drive device of a radio receiver, but can be applied to various rotational force transmission mechanisms in various types of equipment.
以上述べたように、本考案によれば、回転体と
回転軸との間に大きなスリツプトルクを得ること
が出来るので、スリツプトルクのバラツキが発生
し難い。しかも、回転体の正逆の回転時における
スリツプトルクが全く同じであるので、回転体の
正逆の回転操作を違和感なく全く同じフイーリン
グで行える。また、ばね部材を回転軸にネジによ
つて簡単に取付けることができるものであるにも
拘らず、ばね部材の中央部の軸方向の偏倚力がネ
ジのゆるみ防止の働きをするので、使用中に、ネ
ジが不測にゆるむことがない。従つて、使用中
に、ネジのゆるみによつて、スリツプトルクが不
測に小さくなつたり、或いはネジが脱落してスリ
ツプ機構が不測に分解されてしまうような不都合
を未然に防止することが出来て、信頼性の非常に
高いスリツプ機構を得ることが出来る。その上、
ばね部材を回転体の円形凹部内に薄く折り畳むよ
うにして収納出来るので、薄形のスリツプ機構を
得ることが出来ると言う効果を奏する。
As described above, according to the present invention, it is possible to obtain a large slip torque between the rotating body and the rotating shaft, so that variations in slip torque are less likely to occur. Moreover, since the slip torque is exactly the same when the rotating body rotates in the forward and reverse directions, the rotating operation of the rotating body in the forward and reverse directions can be performed with exactly the same feeling without any discomfort. Furthermore, although the spring member can be easily attached to the rotating shaft with a screw, the biasing force in the axial direction at the center of the spring member acts to prevent the screw from loosening during use. This prevents the screws from loosening unexpectedly. Therefore, it is possible to prevent inconveniences such as the slip torque becoming unexpectedly small due to screw loosening during use, or the slip mechanism being unexpectedly disassembled due to screws falling off. , a highly reliable slip mechanism can be obtained. On top of that,
Since the spring member can be folded thinly and stored in the circular recess of the rotating body, it is possible to obtain a thin slip mechanism.
図面は本考案をラジオ受信機のダイヤル駆動装
置に適用した実施例を示したものであつて、第１
図は分解斜視図、第２図はチユーニングつまみの
飾り板を取外した状態で示した平面図、第３図は
第２図−線断面図、第４図は第３図−線
断面図、第５Ａ図及び第５Ｂ図はチユーニングつ
まみへのばね部材のネジ止め要領を説明する要部
の断面図である。
なお図面に用いた符号において、１……チユー
ニングつまみ（回転体）、２……チユーニング軸
（回転軸）、１２……円形内周面、１３……円形凹
部、１３ａ……円形凹部の底面、１７……ばね部
材、１７ａ……ばね部材の中央部、１７ｂ……ば
ね部材の一対の外周部、２０……フランジ付ネ
ジ、である。
The drawing shows an embodiment in which the present invention is applied to a dial drive device of a radio receiver.
The figure is an exploded perspective view, Figure 2 is a plan view of the tuning knob with the decorative plate removed, Figure 3 is a cross-sectional view taken along the lines shown in Figure 2, and Figure 4 is a cross-sectional view taken Figures 5A and 5B are sectional views of essential parts illustrating how to screw the spring member to the tuning knob. In addition, in the symbols used in the drawings, 1...Tuning knob (rotating body), 2...Tuning shaft (rotating shaft), 12...Circular inner peripheral surface, 13...Circular recess, 13a...Bottom surface of circular recess, 17...Spring member, 17a...Center portion of the spring member, 17b...A pair of outer peripheral portions of the spring member, 20...Flanged screw.
Claims (1)
付けられる回転軸と、ほぼＵ字状の中央部とその
中央部の両端部から互いに逆方向に向けて面対称
状をなして円弧状に弯曲された一対の外周部とが
互いに一体に形成され、かつ中央部が外周部に対
して軸方向に偏倚された線状体からなるばね部材
とを具備し、上記回転軸の直径より大きな円形内
周面を有する円形凹部を上記回転体に設け、上記
ばね部材の一対の外周部を中央部に対する両横外
方への偏倚力に抗して上記円形凹部内に挿入させ
た状態で、そのばね部材の中央部を外周部に対す
る軸方向の偏倚力に抗してネジにより上記回転軸
に固定することにより、上記ばね部材の一対の外
周部を上記円形凹部の円形内周面及び底面の円形
内周面に近接された位置に弾性的に押圧させ、そ
の一対の外周部と円形内周面及び底面の円形内周
面に近接された位置との間でのすべり作用部にて
上記回転体と上記回転軸との間のスリツプトルク
が得られるように構成したスリツプ機構。 A rotating body, a rotating shaft on which the rotating body is relatively rotatably attached, and an approximately U-shaped central portion and an arc shape that is plane symmetrical from both ends of the central portion in opposite directions. a pair of curved outer peripheral parts formed integrally with each other, and a spring member consisting of a linear body whose central part is biased in the axial direction with respect to the outer peripheral part, and has a circular shape larger than the diameter of the rotating shaft. A circular recess having an inner circumferential surface is provided in the rotating body, and the outer circumferential portions of the pair of spring members are inserted into the circular recess against the outward biasing force on both sides with respect to the central portion. By fixing the central portion of the spring member to the rotating shaft with a screw against the biasing force in the axial direction toward the outer peripheral portion, the outer peripheral portions of the pair of spring members are fixed to the circular inner peripheral surface and the circular bottom surface of the circular recess. The rotating body is elastically pressed to a position close to the inner circumferential surface, and the rotating body is moved at a sliding action portion between the pair of outer circumferential portions and positions close to the circular inner circumferential surface of the circular inner circumferential surface and the bottom surface. A slip mechanism configured to obtain a slip torque between the rotating shaft and the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8827683U JPS59194633U (en) | 1983-06-09 | 1983-06-09 | slip mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8827683U JPS59194633U (en) | 1983-06-09 | 1983-06-09 | slip mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59194633U JPS59194633U (en) | 1984-12-24 |
| JPS6340654Y2 true JPS6340654Y2 (en) | 1988-10-24 |
Family
ID=30218189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8827683U Granted JPS59194633U (en) | 1983-06-09 | 1983-06-09 | slip mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59194633U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7155376B1 (en) * | 2021-10-25 | 2022-10-18 | 株式会社オリジン | Outer ring member and inner ring member constituting friction type torque limiter, and friction type torque limiter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5648991U (en) * | 1980-09-04 | 1981-04-30 |
-
1983
- 1983-06-09 JP JP8827683U patent/JPS59194633U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5648991U (en) * | 1980-09-04 | 1981-04-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59194633U (en) | 1984-12-24 |
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